Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Cellulosic and lignocellulosic structural materials and methods and systems for manufacturing such materials
8070912 Cellulosic and lignocellulosic structural materials and methods and systems for manufacturing such materials
Patent Drawings:

Inventor: Medoff
Date Issued: December 6, 2011
Application: 13/019,304
Filed: February 1, 2011
Inventors: Medoff; Marshall (Brookline, MA)
Assignee: Xyleco, Inc. (Woburn, MA)
Primary Examiner: Daniels; Matthew
Assistant Examiner: Minskey; Jacob Thomas
Attorney Or Agent: Leber Patent Law P.Leber; Celia H.
U.S. Class: 162/50; 162/158; 162/9
Field Of Search: 162/9; 162/50; 162/158
International Class: D21C 5/00
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: Methods of treating wood and wood products include irradiating untreated wood having a first molecular weight with ionizing radiation to cause an increase in the molecular weight of a cellulosic component of the wood to a second, relatively higher molecular weight.
Claim: What is claimed is:

1. A method of treating wood, the method comprising: irradiating untreated wood having a first molecular weight with electron beam radiation while controlling a gasblanketing the wood through which the electron beam passes, electrons of the beam having an energy of about 2.5 to about 10 MeV, to provide treated wood, in the form of sawn limber or a finished wood product, in which a cellulosic component of the woodhas a second, relatively higher molecular weight at least about 10% higher than the first weight.

2. The method of claim 1, wherein the gas blanketing the wood comprises a gas selected from the group consisting of nitrogen, oxygen, ozone, nitrogen dioxide, sulfur dioxide, and chlorine.

3. The method of claim 1, further comprising quenching the irradiated wood.

4. The method of claim 3, wherein quenching is performed in the presence of a gas selected to react with radicals present in the irradiated wood.

5. The method of claim 1, wherein the increase in molecular weight is at least 50%.

6. The method of claim 1 wherein irradiating comprises irradiating multiple times.

7. The method of claim 1 wherein the wood has multiple sides and irradiating comprises irradiating more than one side of the wood.

8. The method of claim 1 wherein the wood is irradiated at a dose rate of at least 0.5 Mrad/s.

9. The method of claim 8 wherein the wood is irradiated at a dose rate of at least 1 Mrad/sec.
Description:
 
 
  Recently Added Patents
Use of natriuretic peptide for treating heart failure
Semiconductor device and method of adjusting characteristic thereof
Managing aging of silicon in an integrated circuit device
Extensible framework for client-based active network measurement
Method and apparatus for compensating QoS during handover by base station in wireless broadband access system
Toothbrush holder
Signal conversion control circuit for touch screen and method thereof
  Randomly Featured Patents
Interlock system for multi-door enclosures
Hand grip exerciser
System and satellite payload architecture for interactive data distribution services
Methods and apparatus for establishing a call in a cellular mobile network
Train corridor scheduling process
Apparatus and methods for dispensing foamable products
Method for transferring a color image
Outer surface of a tractor hood
Optical waveguide glass fiber flame processing
AAL2 switch for multicast in mobile communication system and switching method